Comp Cams  Xtreme Energy  Hydraulic Flat Tappet Camshafts
Product Discontinued
COMP CAMSPART NUMBER: 249-11-254-20

Comp Cams Xtreme Energy Hydraulic Flat Tappet Camshafts

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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Chevy 396-454ci Big Block 1965-96
XTREME ENERGY 294H-10 Hydraulic Flat Tappet Nitrided Camshaft
Lift .588"/.593"
Duration 294°/306°
RPM Range 2800 to 7000
Lobe Center Angle 110°

COMP Cams is the only aftermarket valve train company in America that provides a Pro Plasma Nitriding Service in-house. Nitriding is a process by which nitrogen is introduced into iron or steel, causing a material's surface hardness to be increased for improved initial and long-term wear characteristics. It is recognized by metallurgists worldwide as the best way to increase the hardness and lubricity of flat tappet cams to enhance break-in and durability. Don't get blinded by shiny surface finishing or heat-treating - nitriding has been race-proven around the world and documented to deliver superior results.

  • Stage 1: Pre-nitrided, unfinished camshaft
  • Stage 2: Nitrided camshaft surface approximately .008"-.010" deep; black oxide finish

Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572


Pro Street/bracket, good intake, headers, lower gears, 3200+ stall, 10.5:1+ compression. Nitrided.
Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width3.0
Package Length24.5
Weight10.32 PG
Part CategoryPerformance Parts
UsageStreet/Strip
Intake Valve Lift0.588 in (14.935 mm)
Int. Duration Advertised (Deg)294
Exh. Duration @ .050 In. (Deg)256
Rpm Range2800-7000
Lifter TypeHydraulic Flat Tappet
Exh. Duration Advertised (Deg)306
Engine Make/SizeChevy Big Block (396-454)
Int. Duration @ .050 In. (Deg)250
Exhaust Valve Lift0.593 in (15.062 mm)
Vendor Part Number11-254-20
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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